Stranger Oddity...
How do you suppose the initial abductions occurred? It would seem to me the Strangers, in their original form, would be hard-pressed to physically kidnap Humans (of course, we could presume they had some wild technology with which to snatch people up). I find the presence of animals amusing in this movie. Did the Strangers go around collecting mice, goldfish & a bunch of oscars, as well as people? What of the cockroach in Wolenski's room? Surely this is the descendant of a stowaway --- a roach who boarded the alien craft without their knowledge. Such things have happened here on Earth enough times. I cant imagine a species stealing other beings for the grand purpose of survival bothering to chase roaches through an apartment, can you?
I notice the Strangers are referred to by some as parasites, is this a fair description? We only see the Strangers inhabit DEAD bodies, & there is no implication that they do (or can) parasitise living creatures. We dont consider Hermit Crabs parasites, do we?